A feeding device for workpiece appearance inspection equipment

Abstract

The present invention provides a feeding device for a workpiece appearance inspection device, which belongs to the field of inspection technology. It solves the technical problems that workpieces may collide with each other and be damaged when feeding in the existing workpiece appearance inspection device. The workpiece appearance inspection device includes a frame, and the feeding device includes a vibrating plate and a feeding pipe. The feeding device also includes a feeding reversing member arranged on the frame, and a feeding channel is arranged in the feeding reversing member, one end of the feeding channel is upward as an inlet, and the other end of the feeding channel is horizontally oriented as an outlet. The inlet of the feeding channel is located below the downward end of the feeding pipe, and an interval feeding mechanism is arranged between the lower end of the feeding pipe and the inlet, which enables the workpieces to enter the feeding channel one by one from the feeding pipe through the inlet, and an air blowing hole connected to an air source is opened on the feeding reversing member, and the air blowing hole is located on the feeding reversing member at a position opposite to the outlet. It has the advantage of preventing workpieces from colliding with each other when feeding horizontally.

Description

Technical Field

[0001] The invention belongs to the field of detection technology and relates to a workpiece appearance detection device, in particular to a feeding device of the workpiece appearance detection device. Background Art

[0002] In the existing precision fields such as optical fiber, it is necessary to precisely connect two optical fibers. The optical fiber connector precisely connects the two end faces of the optical fiber so that the light energy output by the transmitting optical fiber can be matched to the receiving optical fiber to the maximum extent. Cylindrical or conical workpieces are used in optical fiber connectors, such as ceramic ferrules. Ceramic ferrules are a kind of high-precision special ceramic components with an aperture and roundness error of 0.001mm. The connector is a detachable and classified optical fiber connector, which makes the connection and conversion scheduling of the optical channel more flexible and can be used for the debugging and maintenance of the optical communication system.

[0003] After the ceramic ferrule is produced, its appearance needs to be visually inspected to determine whether it is a qualified product. The appearance inspection of the ceramic ferrule includes the two end faces of the ceramic ferrule, the inner cone surface of one end, and the outer peripheral surface. The current method of manual inspection is usually used to inspect the appearance of the ceramic ferrule to determine whether its appearance is damaged, whether the size is qualified, and whether the product itself is deformed. However, manual inspection is inefficient and is prone to missed inspections.

[0004] To this end, a Chinese patent document discloses a workpiece appearance visual inspection device [Authorization Announcement No. CN208399397 U] to solve the above problem. In this patent, the workpiece is horizontally transported to the first positioning roller through a feeding pipe, and the workpiece is visually identified during the transfer process between the first positioning roller and the second positioning roller. In order to achieve the horizontal entry of the workpiece into the inspection station, the feeding pipe is set horizontally, and the workpiece in the feeding pipe is transported through a vibrating plate and then enters by blowing. The feeding pipe has multiple workpieces during the feeding process. Due to the long length of the feeding pipe, the workpiece is blown into the feeding pipe and its movement speed is relatively high. The workpieces will collide with each other, and there is a situation where the workpiece is damaged during the feeding process. At the same time, the fine dust generated by the collision will accumulate and hinder the movement of the workpiece in the feeding pipe, which will eventually cause the feeding pipe to be blocked. Summary of the invention

[0005] The purpose of the present invention is to solve the above problems in the prior art and to propose a feeding device for workpiece appearance inspection equipment. The technical problem solved by the present invention is to prevent workpieces from colliding with each other during horizontal feeding.

[0006] The purpose of the present invention can be achieved by the following technical solutions:

[0007] A feeding device for workpiece appearance inspection equipment, the inspection equipment includes a frame, the feeding device includes a vibrating plate and a feeding pipe arranged on the frame, one end of the feeding pipe is connected to the outlet of the vibrating plate, and the character is that the other end of the feeding pipe is arranged downward, the feeding device also includes a feeding reversing member arranged on the frame, a feeding channel is arranged in the feeding reversing member, one end of the feeding channel is upward as an inlet, and the other end of the feeding channel is horizontally oriented as an outlet, the inlet of the feeding channel is located below the downward end of the feeding pipe, an interval feeding mechanism is provided between the lower end of the feeding pipe and the inlet, which can enable the workpieces to enter the feeding channel one by one from the feeding pipe through the inlet, and an air hole connected to an air source is provided on the feeding reversing member, and the air hole is located on the feeding reversing member at a position opposite to the outlet.

[0008] The workpieces are concentrated in the vibration plate, and the workpieces are uniformly transported to the feeding pipe one by one through the vibration plate. The workpieces in the feeding pipe are arranged in sequence and move toward the downward end of the feeding pipe by gravity. Before the workpieces enter the feeding channel from the feeding pipe, the workpieces are allowed to enter the feeding channel one by one through the interval feeding mechanism. The workpieces are in a vertical state when entering the feeding channel, and are turned to a horizontal state through the guidance of the feeding channel. The high-pressure gas blown out of the blowing hole can push the workpiece to slide toward the outlet of the feeding channel and slide out of the outlet into the detection roller; since there is always only one workpiece in the feeding channel, there will be no collision when the workpiece slides horizontally and at high speed toward the outlet of the feeding channel, and the workpiece will not be damaged, and no fine dust will be generated. The feeding channel can remain unobstructed even after long-term use without maintenance; an electromagnetic valve is arranged between the blowing hole and the gas source, and the high-pressure gas is controlled to enter the blowing hole by the electromagnetic valve. The electromagnetic valve is controlled by a controller and can blow air after the workpiece slides to a horizontal state.

[0009] In the feeding device of the above-mentioned workpiece appearance detection equipment, the interval feeding mechanism includes two ejecting heads and a feeding pipe vertically fixed on the frame, the upper end of the feeding pipe is aligned and connected with the feeding pipe, the lower end of the feeding pipe is aligned and connected with the inlet of the feeding channel, and two upper and lower distributed clearance gaps are provided on the tube wall of the middle section of the feeding pipe, and the two ejecting heads are respectively facing the two clearance gaps, and the frame is provided with a driving source 1 and a driving source 2, the driving source 1 is connected to the ejecting head located above, and the driving source 2 is connected to the ejecting head located below, and the driving source 1 and the driving source 2 can drive the corresponding ejecting heads to move and enable the ejecting heads to extend into the corresponding clearance gaps and push against the corresponding workpieces. After the workpiece passes through the feeding pipe, it enters the feeding pipe. At this time, the workpieces are stacked on each other in the feeding pipe due to gravity. In the initial state, driving source 2 drives the corresponding ejecting head to extend into the corresponding clearance gap to position the workpiece at the bottom of the feeding pipe in the feeding pipe, and the remaining workpieces are stacked under the lowest workpiece in turn. Then, driving source 1 drives the corresponding ejecting head to pass through the corresponding clearance gap and rest on the workpiece adjacent to the lowest workpiece. Then, driving source 2 drives the corresponding ejecting head to retreat and move out of the feeding pipe. The lowest workpiece slides down and enters the feed reversing member. The remaining workpieces are stacked on top of the workpiece fixed by the ejecting head at the top in turn. Since the time for the workpiece to fall into one station is fixed The first driving source drives the top two heads to press against the workpiece adjacent to the bottom workpiece after all the workpieces have fallen one station, and the cycle continues like this, so that the workpieces can enter the feed channel one by one from the feeding pipe through the inlet, so that there is always only one workpiece in the feed channel, thus avoiding contact and collision between the workpieces, protecting the workpieces, and ensuring the smooth flow of the feed channel; the operation of the first driving source and the second driving source is controlled by a control program pre-set in the controller, which is the prior art.

[0010] As another case, in the feeding device of the above-mentioned workpiece appearance detection equipment, the interval feeding mechanism includes a feeding head, a stopping head and a feeding tube vertically fixed on the frame, the upper end of the feeding tube is aligned and connected with the feeding tube, the lower end of the feeding tube is aligned and connected with the inlet of the feed channel, and two upper and lower distributed clearance gaps are provided on the tube wall of the middle section of the feeding tube, the feeding head faces the clearance gap located above, and the stopping head faces the clearance gap located below, the frame is provided with a driving source one that can drive the feeding head to move and enable the feeding head to extend into the corresponding clearance gap and push against the corresponding workpiece, and the frame is also provided with a driving source two that can drive the stopping head to move and enable the stopping head to extend into the corresponding clearance gap and isolate the feeding tube. The workpieces enter the feeding pipe after passing through the feeding pipe. At this time, the workpieces are stacked on each other in the feeding pipe due to the action of gravity. In the initial state, the second driving source drives the blocking head to pass through the corresponding gap and extend into the feeding pipe to block the feeding pipe. The workpiece at the bottom of the feeding pipe rests on the blocking head, and the remaining workpieces are stacked under the workpiece at the bottom in sequence. Then the first driving source drives the ejecting head to pass through the corresponding gap and rest on the workpiece adjacent to the workpiece at the bottom. The workpiece is pressed against the inner wall of the feeding pipe by the ejecting head to fix the workpiece relative to the feeding pipe. Then the second driving source drives the blocking head to retreat and move out of the feeding pipe. After the workpiece loses its support, it slides down and enters the feed reversing part, and the remaining workpieces are stacked in sequence on top of the workpiece fixed by the ejector head. After the material dropping is completed, the driving source 2 drives the blocking head to extend into the feeding pipe again to cut off the feeding pipe. Then the driving source 1 drives the ejector head to retreat, and the workpiece in the feeding pipe moves downward a distance of the workpiece length and then is positioned, completing the interval feeding of one workpiece. This cycle is repeated, and the workpieces enter the feed channel one by one from the feeding pipe through the inlet, so that there is always only one workpiece in the feed channel, which avoids contact and collision between the workpieces, protects the workpieces, and also ensures the smooth flow of the feed channel.

[0011] In the feeding device of the above-mentioned workpiece appearance inspection equipment, the driving source 1 and the driving source 2 are relatively staggered in the circumferential direction, and the two said clearance gaps are respectively arranged corresponding to the corresponding driving source 1 and the driving source 2. Since the driving source 1 and the driving source 2 themselves have thickness, the relatively staggered driving source 1 and the driving source 2 can avoid contact between the two when they are relatively close, so that the minimum value of the relatively close minimum spacing between the ejecting head and the blocking head is 0, so that the spacing feeding mechanism can adapt to workpieces of any length.

[0012] In the feeding device of the above-mentioned workpiece appearance inspection equipment, the ejector head is made of elastic material. The elastic material can be silicone, rubber, cloth, etc., which can avoid damage to the workpiece when it is pushed against, and provide pre-tightening force after the ejector head is deformed, increase the friction between the workpiece and the feeding tube and the ejector head, and ensure the fixing strength of the workpiece against the ejector head.

[0013] In the feeding device of the above-mentioned workpiece appearance inspection equipment, the feeding pipe is made of a rigid pipe, which can be a stainless steel pipe, a hard plastic pipe, or a copper pipe, etc. This structure keeps the channel in the feeding pipe vertical, ensuring that the workpieces in the feeding pipe are stacked up and down in sequence to avoid the workpieces being stuck.

[0014] In the feeding device of the above-mentioned workpiece appearance inspection equipment, a positioning block is fixed on the frame, a mounting hole is provided on the positioning block, the feeding pipe is fixed in the mounting hole and the pipe wall of the feeding pipe is in contact with the hole wall of the mounting hole, and a clearance hole aligned with the clearance notch is provided on the positioning block. Since the force exerted by the ejecting head to press the workpiece against the inner wall of the feeding pipe is relatively large, the feeding pipe may be bent, and the feeding pipe is inserted into the mounting hole of the positioning block to avoid the bending of the feeding pipe, thereby ensuring that the workpieces fall smoothly in sequence.

[0015] In the feeding device of the above-mentioned workpiece appearance inspection equipment, the feeding tube is a flexible tube, the feeding tube and the feeding tube are connected through a connector, the middle of the connector has a connecting hole, the downward end of the feeding tube is inserted into the upper end of the connecting hole, the lower end of the feeding tube abuts against the lower end of the connector and the inner wall of the feeding tube is flush with the hole wall of the connecting hole. This structure can keep the workpiece moving smoothly from the feeding tube to the feeding tube to avoid the workpiece being stuck.

[0016] In the feeding device of the above-mentioned workpiece appearance inspection equipment, the frame includes a mounting frame, the material passing tube and the feed reversing member are fixed on the mounting frame, and fixed plates are respectively installed on the mounting frame at positions opposite to the two clearance notches of the material passing tube, the driving source 1 is fixed on the fixed plate opposite to the clearance notch located above, and the driving source 2 is fixed on the fixed plate opposite to the clearance notch located below, and the mounting frame is provided with a strip mounting hole for connecting the fixed plate, and the fixed plate can move along the length direction of the strip mounting hole to approach or move away from the clearance notch facing it, and the fixed plate is provided with a positioning hole, and the fixed plate is fixed to the fixed plate by bolt 1 passing through the strip mounting hole and the fixing hole. Through this structure, the distance between the driving source 1 and the driving source 2 and the clearance notch can be adjusted during installation, so that the pressure when the top head is against the workpiece can just position the workpiece and will not crush the workpiece.

[0017] In the feeding device of the above-mentioned workpiece appearance detection equipment, the clearance gap is a strip hole opened along the axial direction of the feeding tube, the diameter of the positioning hole is smaller than the width of the strip mounting hole, the outer diameter of the bolt 1 matches the positioning hole, and the bolt 1 can move in the strip mounting hole in the up and down direction. This structure enables the fixing plate to move in the up and down direction, that is, it can adjust the distance between the driving source 1 and the driving source 2, and adjust the distance between the driving source 1 and the driving source 2 after replacing workpieces of different lengths, so that the top material head can accurately rest on the position of the workpiece that needs to rest, and can quickly adjust the distance between the driving source 1 and the driving source 2 when replacing workpieces of different lengths for detection, adapt to the replaced workpiece, and realize the interval feeding; since the length difference of workpieces of different models is small, the difference between the outer diameter of the bolt 1 and the width of the strip mounting hole is between 1mm-3mm, which can meet the needs.

[0018] Compared with the prior art, the feeding device of the workpiece appearance inspection equipment has the advantage of preventing workpieces from colliding with each other during horizontal feeding. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a diagram of the working state of the workpiece feeding device.

[0020] Figure 2 It is a three-dimensional structural diagram of the workpiece feeding device.

[0021] Figure 3 It is a three-dimensional view of the workpiece feeding device when the feed reversing member is opened.

[0022] Figure 4 It is a side structural diagram of the workpiece feeding device.

[0023] Figure 5 This is a three-dimensional structural diagram of the positioning block and the material passing pipe when installed.

[0024] Figure 6 It is a schematic diagram of the main structure of the commutation plate.

[0025] Figure 7 It is a three-dimensional structural diagram of the feeding pipe.

[0026] In the figure, 1, frame; 11, mounting frame; 12, strip mounting hole; 13, fixing plate; 14, positioning hole; 15, positioning block; 16, mounting hole; 17, clearance hole; 2, driving source 1; 21, driving source 2; 22, ejector head; 23, feed pipe; 24, clearance gap; 25, connector; 3, feed reversing member; 31, feed channel; 32, blowing hole; 4, reversing plate; 41, guide groove; 42, vertical section; 43, turning section; 44, horizontal section; 45, fixing hole; 5, cover plate; 51, mounting circular hole; 6, vibration plate; 61, feeding pipe. DETAILED DESCRIPTION

[0027] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0028] Embodiment 1

[0029] like Figures 1 to 7 As shown, the workpiece appearance inspection equipment includes a frame 1, a feeding device includes a vibration plate 6 arranged on the frame 1 and a feeding pipe 61 which is a flexible tube, one end of the feeding pipe 61 is connected to the outlet of the vibration plate 6, and the other end of the feeding pipe 61 is arranged downward, the feeding device also includes a feeding reversing member 3 arranged on the frame 1, a feeding channel 31 is arranged in the feeding reversing member 3, one end of the feeding channel 31 is upward as an inlet, and the other end of the feeding channel 31 is horizontally oriented as an outlet, the inlet of the feeding channel 31 is located below the downward end of the feeding pipe 61, and an interval feeding mechanism is provided between the lower end and the inlet of the feeding pipe 61, which can enable the workpieces to enter the feeding channel 31 one by one from the feeding pipe 61 through the inlet, a blowing hole 32 connected to the air source is opened on the feeding reversing member 3, the blowing hole 32 is located on the feeding reversing member 3 at a position opposite to the outlet, an electromagnetic valve is arranged between the blowing hole 32 and the air source, and the high-pressure gas is controlled to enter the blowing hole 32 by the electromagnetic valve, and the electromagnetic valve is controlled by a controller.

[0030] The interval feeding mechanism includes two feeding heads 22 and a feeding pipe 23 vertically fixed on the frame 1. The upper end of the feeding pipe 23 is aligned with the feeding pipe 61 and connected through the connector 25. Specifically, the middle part of the connector 25 has a connecting hole, and the downward end of the feeding pipe 61 is inserted into the upper end of the connecting hole. The lower end of the feeding pipe 23 abuts against the lower end of the connector 25 and the inner wall of the feeding pipe 23 is flush with the hole wall of the connecting hole; the lower end of the feeding pipe 23 is aligned with the inlet of the feeding channel 31 and connected, and the feeding is completed. Two upper and lower distributed clearance gaps 24 are provided on the tube wall of the middle section of the tube 23. The clearance gaps 24 are strip holes provided along the axial direction of the feeding tube 61. The two ejecting heads 22 face the two clearance gaps 24 respectively. A positioning block 15 is fixed on the frame 1. The positioning block 15 is provided with a mounting hole 16. The feeding tube 23 is passed through and fixed in the mounting hole 16, and the tube wall of the feeding tube 23 is in contact with the hole wall of the mounting hole 16. The positioning block 15 is provided with a clearance hole 17 aligned with the clearance gap 24.

[0031] The frame 1 is provided with a driving source 1 2 and a driving source 2 21, the driving source 1 2 is connected to the top material head 22 located above, the driving source 2 21 is connected to the top material head 22 located below, the driving source 1 2 and the driving source 2 21 are relatively staggered in the circumferential direction, and two clearance notches 24 are respectively arranged corresponding to the corresponding driving source 1 2 and the driving source 2 21, the driving source 1 2 and the driving source 2 21 can drive the corresponding top material head 22 to move and can make the top material head 22 extend into the corresponding clearance notch 24 and push on the corresponding workpiece; the driving source 1 2 and the driving source 2 21 are cylinders or oil cylinders or motors, and the actions of the driving source 1 2 and the driving source 2 21 are controlled by a controller; the top material head 22 is made of elastic materials such as silicone or rubber or cloth. The feeding pipe 23 is made of rigid pipes such as stainless steel pipes, hard plastic pipes or copper pipes.

[0032] The frame 1 includes a mounting frame 11, on which a material passing pipe 23 and a feed reversing member 3 are fixed, and fixed plates 13 are respectively installed at positions on the mounting frame 11 opposite to two clearance notches 24 of the material passing pipe 23, a driving source 1 2 is fixed on the fixed plate 13 opposite to the clearance notch 24 located above, and a driving source 2 21 is fixed on the fixed plate 13 opposite to the clearance notch 24 located below, and a strip-shaped mounting hole 12 for connecting the fixed plate 13 is provided on the mounting frame 11, and the fixed plate 13 can move closer to or away from the clearance notch 24 facing it by moving along the length direction of the strip-shaped mounting hole 12, and a positioning hole 14 is provided on the fixed plate 13, and the fixed plate 13 is fixed to the fixed plate 13 by a bolt 1 passing through the strip-shaped mounting hole 12 and a fixing hole 45. The diameter of the positioning hole 14 is smaller than the width of the strip-shaped mounting hole 12, and the outer diameter of the bolt 1 matches the positioning hole 14, and the bolt 1 can move in the strip-shaped mounting hole 12 in the up-and-down direction. This structure enables the fixing plate 13 to move in the up and down directions, that is, to adjust the distance between the driving source 1 2 and the driving source 2 21, and to adjust the distance between the driving source 1 2 and the driving source 2 21 after replacing workpieces of different lengths.

[0033] The feed reversing member 3 includes a reversing plate 4 and a cover plate 5. A guide groove 41 in a "U" shape and having a groove depth greater than the diameter of the workpiece is provided on the side of the reversing plate 4. The guide groove 41 includes a vertical section 42, a turning section 43 and a horizontal section 44. The port of the vertical section 42 is the above-mentioned inlet, the port of the horizontal section 44 is the above-mentioned outlet, the turning section 43 is in an arc shape, and the width of the guide groove 41 at the turning section 43 is greater than the width of the guide groove 41 at the vertical section 42 and the horizontal section 44. The width of the guide groove 41 at the vertical section 42 and the horizontal section 44 matches the diameter of the workpiece, and the width of the guide groove 41 at the turning section 43 is greater than 1 times the diameter of the workpiece.

[0034] The cover plate 5 is attached to the side of the reversing plate 4, and the cover plate 5 covers the notch of the guide groove 41 to form a feed channel 31, one end of the feed channel 31 faces upward, and the other end of the feed channel 31 faces horizontally. The cover plate 5 can be detachably fixed on the reversing plate 4, and the reversing plate 4 is provided with a blowing hole 32 connected to the air source, the air outlet is connected to the horizontal section 44, and the axis of the air outlet is parallel to the length direction of the horizontal section 44. The cover plate 5 is transparent, and the cover plate 5 is made of glass or transparent plastic.

[0035] At least two fixing holes 45 are provided on the reversing plate 4, and fixing holes 45 are provided on both the upper and lower sides of the guide groove 41. The cover plate 5 is provided with a mounting circular hole 51 corresponding to the fixing hole 45. The mounting circular hole 51 deviates from the horizontal and axial center position of the cover plate 5, and the diameter of the mounting circular hole 51 is larger than the diameter of the fixing hole 45. The reversing plate 4 and the cover plate 5 are fixed by bolts 2 passing through the fixing holes 45 and the mounting circular hole 51, and the diameter of the bolts 2 matches the fixing holes 45. When the reversing plate 4 and the cover plate 5 are fixed, the cover plate 5 is pressed and fixed on the reversing plate 4 by bolts 2 corresponding to the fixing holes 45. When a workpiece is observed to be stuck in the feed channel 31, the bolts 2 are unscrewed until the last one is left. The last bolt 2 only needs to be loosened. At this time, the cover plate 5 will rotate with the last bolt 2 as the rotation axis to open the notch of the guide groove 41, so as to facilitate the removal of the stuck workpiece or the cleaning of the guide groove 41. In the next operation, there is no need to remove the cover plate 5 completely, so as to facilitate the installation of the cover plate 5.

[0036] The workpieces are concentrated in the vibration plate 6, and the workpieces are uniformly transported to the feeding tube 61 one by one through the vibration plate 6. The workpieces in the feeding tube 61 are arranged in sequence and move toward the downward end of the feeding tube 61 by the action of gravity. After passing through the feeding tube 61, the workpieces enter the feeding tube 23. At this time, the workpieces are stacked on each other in the feeding tube 23 by the action of gravity. In the initial state, the driving source 21 drives the corresponding ejecting head 22 to extend into the corresponding clearance gap 24 to position the lowest workpiece in the feeding tube 23 in the feeding tube 23, and the remaining workpieces are stacked under the lowest workpiece in sequence, and then the driving source 1 2 drives the corresponding ejecting head 22 to pass through the corresponding clearance gap 24 and rest on the workpiece adjacent to the lowest workpiece, and then the driving source 21 drives the corresponding ejecting head 22 to retreat and move out of the feeding tube 23. The bottom workpiece then slides down and enters the feed reversing member 3, and the remaining workpieces are stacked in sequence on top of the workpiece fixed by the top head 22 located above. Since the time for the workpiece to fall one station is fixed, after the drop is completed, the driving source 1 2 drives the top heads 22 to retreat, and the workpiece falls. At the same time, the driving source 2 21 drives the top heads 22 to rest on the workpiece after the bottom workpiece falls one station, and positions the workpiece. After all workpieces have fallen one station, they are stacked in sequence, and the driving source 1 2 drives the top heads 22 to rest on the workpiece adjacent to the bottom workpiece. This cycle is repeated, so that the workpieces enter the feed channel 31 one by one from the feeding pipe 61 through the inlet, so that there is always only one workpiece in the feed channel 31, which avoids contact and collision between the workpieces, protects the workpieces, and also ensures the smooth flow of the feed channel 31.

[0037] The workpiece in this embodiment is a ceramic ferrule, and the feeding action of the workpiece is uniformly controlled by a controller, which is a prior art.

[0038] Embodiment 2

[0039] The structure and principle of this embodiment are basically the same as those of the first embodiment, except that: the interval feeding mechanism includes a feeding head, a blocking head and a feeding pipe vertically fixed on the frame, the upper end of the feeding pipe is aligned and connected with the feeding pipe, the lower end of the feeding pipe is aligned and connected with the inlet of the feeding channel, and two upper and lower distributed clearance gaps are provided on the tube wall of the middle section of the feeding pipe, the feeding head faces the clearance gap located above, and the blocking head faces the clearance gap located below, the frame is provided with a driving source 1 that can drive the feeding head to move and enable the feeding head to extend into the corresponding clearance gap and push against the corresponding workpiece, and the frame is also provided with a driving source 2 that can drive the blocking head to move and enable the blocking head to extend into the corresponding clearance gap and isolate the feeding pipe. The workpieces enter the feeding pipe after passing through the feeding pipe. At this time, the workpieces are stacked on each other in the feeding pipe due to the action of gravity. In the initial state, the second driving source drives the blocking head to pass through the corresponding gap and extend into the feeding pipe to block the feeding pipe. The workpiece at the bottom of the feeding pipe rests on the blocking head, and the remaining workpieces are stacked under the workpiece at the bottom in sequence. Then the first driving source drives the ejecting head to pass through the corresponding gap and rest on the workpiece adjacent to the workpiece at the bottom. The workpiece is pressed against the inner wall of the feeding pipe by the ejecting head to fix the workpiece relative to the feeding pipe. Then the second driving source drives the blocking head to retreat and move out of the feeding pipe. After the workpiece loses its support, it slides down and enters the feed reversing part, and the remaining workpieces are stacked in sequence on top of the workpiece fixed by the ejector head. After the material dropping is completed, the driving source 2 drives the blocking head to extend into the feeding pipe again to cut off the feeding pipe. Then the driving source 1 drives the ejector head to retreat, and the workpiece in the feeding pipe moves downward a distance of the workpiece length and then is positioned, completing the interval feeding of one workpiece. This cycle is repeated, and the workpieces enter the feed channel one by one from the feeding pipe through the inlet, so that there is always only one workpiece in the feed channel, which avoids contact and collision between the workpieces, protects the workpieces, and also ensures the smooth flow of the feed channel.

[0040] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A feeding device for a workpiece appearance inspection device, the inspection device comprising a frame (1), the feeding device comprising a vibration plate (6) and a feeding pipe (61) arranged on the frame (1), one end of the feeding pipe (61) being connected to an outlet of the vibration plate (6), characterized in that: The other end of the feeding pipe (61) is arranged downwards, and the feeding device further comprises a feeding reversing member (3) arranged on the frame (1), a feeding channel (31) is arranged in the feeding reversing member (3), one end of the feeding channel (31) is upwards as an inlet, and the other end of the feeding channel (31) is horizontally oriented as an outlet, the inlet of the feeding channel (31) is located below the end of the feeding pipe (61) facing downwards, and an interval feeding mechanism is arranged between the lower end of the feeding pipe (61) and the inlet, which enables workpieces to enter the feeding channel (31) one by one from the feeding pipe (61) through the inlet, and the feeding reversing member (3) is provided with a blowing hole (32) connected to an air source, and the blowing hole (32) is located on the feeding reversing member (3) at a position opposite to the outlet.

2. The feeding device of the workpiece appearance inspection equipment according to claim 1, characterized in that: The interval feeding mechanism comprises two feeding heads (22) and a feeding pipe (23) vertically fixed on the frame (1); the upper end of the feeding pipe (23) is aligned and communicated with the feeding pipe (61); the lower end of the feeding pipe (23) is aligned and communicated with the inlet of the feeding channel (31); two upper and lower distributed clearance notches (24) are provided on the tube wall of the middle section of the feeding pipe (23); the two feeding heads (22) face the two clearance notches (24) respectively; the frame (1) is provided with a driving source 1 (2) and a driving source 2 (21); the driving source 1 (2) is connected to the feeding head (22) located at the top; the driving source 2 (21) is connected to the feeding head (22) located at the bottom; the driving source 1 (2) and the driving source 2 (21) can drive the corresponding feeding head (22) to move and enable the feeding head (22) to extend into the corresponding clearance notch (24) and to push against the corresponding workpiece.

3. The feeding device of the workpiece appearance inspection equipment according to claim 1, characterized in that: The interval feeding mechanism comprises a feeding head (22), a blocking head and a feeding pipe (23) vertically fixed on the frame (1); the upper end of the feeding pipe (23) is aligned and communicated with the feeding pipe (61); the lower end of the feeding pipe (23) is aligned and communicated with the inlet of the feeding channel (31); two upper and lower distributed clearance notches (24) are provided on the pipe wall of the middle section of the feeding pipe (23); the feeding head (22) faces the upper clearance notch (24); the blocking head faces the lower clearance notch (24); the frame (1) is provided with a driving source (2) that can drive the feeding head (22) to move and enable the feeding head (22) to extend into the corresponding clearance notch (24) and to push against the corresponding workpiece; the frame (1) is also provided with a driving source (21) that can drive the blocking head to move and enable the blocking head to extend into the corresponding clearance notch (24) and to block the feeding pipe (23).

4. The feeding device of the workpiece appearance inspection equipment according to claim 2 or 3, characterized in that: The driving source one (2) and the driving source two (21) are relatively staggered in the circumferential direction, and the two clearance gaps (24) are respectively arranged corresponding to the corresponding driving source one (2) and the driving source two (21).

5. The feeding device of the workpiece appearance inspection equipment according to claim 2 or 3, characterized in that: The ejector head (22) is made of elastic material.

6. The feeding device of the workpiece appearance inspection equipment according to claim 2 or 3, characterized in that: The material passing pipe (23) is made of a rigid pipe.

7. The feeding device of the workpiece appearance inspection equipment according to claim 2 or 3, characterized in that: A positioning block (15) is fixed on the frame (1), a mounting hole (16) is provided on the positioning block (15), the material passing pipe (23) is passed through and fixed in the mounting hole (16), and the pipe wall of the material passing pipe (23) is in contact with the hole wall of the mounting hole (16), and a clearance hole (17) aligned with the clearance notch (24) is provided on the positioning block (15).

8. The feeding device of the workpiece appearance inspection equipment according to claim 2 or 3, characterized in that: The feeding pipe (61) is a flexible pipe. The feeding pipe (23) and the feeding pipe (61) are connected via a connector (25). A connecting hole is provided in the middle of the connector (25). The downward end of the feeding pipe (61) is inserted into the upper end of the connecting hole. The lower end of the feeding pipe (23) abuts against the lower end of the connector (25) and the inner wall of the feeding pipe (23) is flush with the hole wall of the connecting hole.

9. The feeding device of the workpiece appearance inspection equipment according to claim 2 or 3, characterized in that: The frame (1) comprises a mounting frame (11), the material passing pipe (23) and the feed reversing member (3) are fixed on the mounting frame (11), and fixing plates (13) are respectively installed at positions on the mounting frame (11) opposite to two clearance notches (24) of the material passing pipe (23), the driving source 1 (2) is fixed on the fixing plate (13) opposite to the clearance notch (24) located above, and the driving source 2 (21) is fixed on the fixing plate (13) opposite to the clearance notch (24) located below. 4) on the fixed plate (13) opposite thereto, the mounting frame (11) is provided with a strip-shaped mounting hole (12) for connecting the fixed plate (13), the fixed plate (13) can be moved along the length direction of the strip-shaped mounting hole (12) to approach or move away from the opposite clearance notch (24), the fixed plate (13) is provided with a positioning hole (14), the fixed plate (13) is fixed to the fixed plate (13) by a bolt passing through the strip-shaped mounting hole (12) and the fixing hole (45).

10. The feeding device of the workpiece appearance inspection equipment according to claim 9, characterized in that: The clearance notch (24) is a strip hole opened along the axial direction of the feeding tube (61), the diameter of the positioning hole (14) is smaller than the width of the strip mounting hole (12), the outer diameter of the bolt 1 matches the positioning hole (14), and the bolt 1 can move in the strip mounting hole (12) in the up and down directions.

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